//
//  RedViewController.h
//  BlockDemo
//
//  Created by UniHan_iMac on 17/3/27.
//  Copyright © 2017年 UniHan_iMac. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface RedViewController : UIViewController
@property (weak, nonatomic) IBOutlet UIView *redView;
@property(nonatomic,copy) void(^ChangeColors)(int);// 第二种方法创建block
@end
